Added GitHub webhook functionality and configuration for API interaction

This commit introduces functionality for GitHub webhook interaction and API calls. The git operations are handled by a custom GitHub client in PHP, details for API endpoints are outlined in a new OpenAPI schema, and the project setup includes PHP FPM and NGINX configuration using Docker. A webhook receiver is also added to process incoming webhook payloads.

src/GitHubClient.php

@@ -0,0 +1,39 @@
+<?php
+
+require 'vendor/autoload.php';
+
+use GuzzleHttp\Client;
+
+class GitHubClient
+{
+    private $client;
+    private $token;
+
+    public function __construct($token)
+    {
+        $this->client = new Client([
+            'base_uri' => 'https://api.github.com/',
+            'headers' => [
+                'Authorization' => "token $token",
+                'Accept' => 'application/vnd.github.v3+json',
+            ],
+        ]);
+        $this->token = $token;
+    }
+
+    public function getRepositoryContent($owner, $repo, $path, $ref = 'main')
+    {
+        $response = $this->client->get("repos/$owner/$repo/contents/$path", [
+            'query' => ['ref' => $ref]
+        ]);
+        return json_decode($response->getBody(), true);
+    }
+
+    public function listCommits($owner, $repo, $params = [])
+    {
+        $response = $this->client->get("repos/$owner/$repo/commits", [
+            'query' => $params
+        ]);
+        return json_decode($response->getBody(), true);
+    }
+}

src/composer.json

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+{
+  "name": "vendor_name/nibiru-framework-agent",
+  "description": "A project to interact with GitHub API using PHP",
+  "authors": [
+    {
+      "name": "Stephan Kasdorf",
+      "email": "stephan.kasdorf@bittomine.com"
+    }
+  ],
+  "require": {
+    "php": "^8.3",
+    "guzzlehttp/guzzle": "^7.3"
+  },
+  "autoload": {
+    "psr-4": {
+      "": "src/"
+    }
+  },
+  "scripts": {
+    "post-install-cmd": [
+      "chmod -R 777 storage"
+    ]
+  },
+  "config": {
+    "optimize-autoloader": true,
+    "preferred-install": "dist",
+    "sort-packages": true
+  }
+}

src/webhookReceiver.php

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+<?php
+
+require 'GitHubClient.php';
+
+$token = getenv('GITHUB_TOKEN');
+$client = new GitHubClient($token);
+
+// Get the webhook payload
+$payload = file_get_contents('php://input');
+$data = json_decode($payload, true);
+
+if (isset($data['commits'])) {
+    foreach ($data['commits'] as $commit) {
+        // Process each commit
+        echo "Commit message: " . $commit['message'] . "\n";
+    }
+}
+
+// Respond to GitHub
+http_response_code(200);
+echo json_encode(['status' => 'Webhook received']);